Sgt. Frog S01 E09 Natsumi: Where Love Blooms, Kululu Looms / Hinata Aki: A Dynamite Woman

The Keroro Platoon search for another missing member - Kululu, the brains of the operation. But he's already causing havoc in the Hinata household when he invents a device that can revert adults to their "bittersweet youth."